package com.itheima.kebian;

public class Demo01 {

    public static void main(String[] args) {
      /*  sing(10);
        sing(10,20);
        sing(new int[]{10,20,30});*/
      sing();


    }
/*   public static void sing(int[] arr){}*/
   public static void sing(int... arr){
       System.out.println(arr);
   }
}
